PUBLIC MARKS from decembre with tags solution & information

To install Firebug manually : There are two ways to run extensions manually: 1. Extract the XPI : Download the XPI file that contains the extension Locate the 'extensions' folder within your profile (e.g. via Firefox menu > Help > Troubleshooting Information > Show Folder) Create a new folder within the 'extensions' folder and call it like the add-on's id (for Firebug this is [email protected]) Extract the XPI into that folder 2. Get the sources from the git repository: A detailed description for how to do that can be found on the development setup description on the Firebug wiki. It's similar to the description above with the addition that you'll be able to always get the latest sources. Two notes: - The folder name must be the same as the addon's ID (look in install.rdf of the addon) In your case it's not firebug-2.0b1 , but [email protected] - The directory where the addon should be placed is not where the Firefox itself is installed, but into your Firefox's profile. By default it's in %APPDATA%MozillaFirefoxProfilesXXXXXextensions (where XXXXX is name of your profile folder. More info about profiles you can find here)